Function forceToStr

forceToStr(value, defaultValue?): string
强制转化为字符串，避免导出表格显示科学计数法。
Parameters
- value: any
  值
- defaultValue: string = '-'
  默认值
Returns string
Example
```
forceToStr(123123123); /// '123123123'
forceToStr(undefined); /// '-'
forceToStr(undefined, 0); /// '0'
```